So, we put in for our MF trip on Fri morning (may 5) on highway 21, took out last night at Cache Bar. Had flows between 7-8 ft @ MF lodge. Here's the comprehensive, river-level wood report as of now. Keep in mind things will likely be changing in there and more logs may appear as the water drops.
Putin: I recommend putting in on the little creek on the south side of the highway (right side if coming from boise) and floating under the road. There is an unrunnably low bridge that would cause real problems if you put in on the wrong channel on the north side of the road. Putting in on the south side avoids this hazard. The bridge on the north side that people typically put in at when there is less snow was no problem to duck, but you might want to check on that if the flow is over 7 feet just to be sure.
Early stretches: No *significant* wood in the uppermost sections--there are lots of angled pokers, but skilled kayakers and rafters should not have a problem getting around most of the stuff above the pack bridge. Fish trap was out of way on left side.
Pack bridge: there are a RIVER-WIDE log and then a CHANNEL-WIDE log maybe a quarter mile below the pack bridge where the trail crosses to the right side of the river. The riverwide is new this year, aligned perpendicularly to the flow with lots of branchy goal-post-style uprights, and the water was just high enough to go over it. We were able to stop in a small eddy (might be difficult for more than maybe one raft to hit this eddy) to scout, then ran between two of the longer uprights on the right side. Prevalence of uprights means this one is probably a mandatory raft-portage. Will probably be a portage for kayaks too when the flow drops. The channel-wide log is a bend or two downriver where the river divides into two channels that both bend right, the left of which runs along a short rock wall. Last year I remember boofing the log far left along the rock wall. It wasn't very clean and I remember some people getting tangled/hit by branches and having some excitement. This year we noticed that the right channel was clear and had enough water to run, so we were able to avoid it altogether. Not sure if the right channel will remain runnable if the flow drops or whether a raft could make the pull to the right even if it is, so beware.
Big hole: You'll want to scout the only real horizon-line on Marsh; I think some people call it Big Hole or something like that, and it comes up just a few minutes before the confluence with Bear Valley Creek. It's a right-bending rapid with a rock wall on the left, a leaning poker-log angling out above the rapid from river right. There's a good eddy and scout on river right, flat and forested. There were three new logs here, all of which are leaning out into the current from river right, that could really cause problems if you typically run right here, like I do. You can avoid them by running this rapid far left and cutting back to the right between two holes, but you'll want to see it first and this is a rapid people should probably always scout because this rapid is narrow, steep and tends to collect wood.
Middle Fork Proper: Nothing to speak of on the MF proper (just some contained, easily-avoidable jams) until Dagger, where two large logs are solidly locked into place just above the falls. You can get a good look from the pack bridge above dagger. When we arrived to camp there, the logs made dagger unrunnable. By the next morning, there was enough water we probably could have carried back up and ran it if we were so motivated. We weren't. No stationary logs on the entire MF below Dagger. I say stationary because as it rose the river became filled with telephone-pole-size logs that would float by every minute or so. We started classifying them as "a mere branch," "juicy," or "meaty," depending on their length, girth and overall attitude. BTW, filter water from side creeks until the silt starts dropping out, or use alum and let settle first. The MF itself was definitely a filter-clogger, and larger creeks like Marble Ck, Loon and Camus looked like heavily creamed coffee. Big Ck surprisingly wasn't running very high; maybe it already flushed?
Have fun out there. Again, the look situation could change a lot in the next few weeks, so stay on your toes!